func (s *ConfigSuite) TestDefaultType(c *gc.C) {
assertDefault := func(type_ string, value string, expected interface{}) {
config := fmt.Sprintf(`options: {t: {type: %s, default: %s}}`, type_, value)
result, err := charm.ReadConfig(bytes.NewBuffer([]byte(config)))
c.Assert(err, gc.IsNil)
c.Assert(result.Options["t"].Default, gc.Equals, expected)
}
assertDefault("boolean", "true", true)
assertDefault("string", "golden grahams", "golden grahams")
assertDefault("string", `""`, "")
assertDefault("float", "2.2e11", 2.2e11)
assertDefault("int", "99", int64(99))
assertTypeError := func(type_, str, value string) {
config := fmt.Sprintf(`options: {t: {type: %s, default: %s}}`, type_, str)
_, err := charm.ReadConfig(bytes.NewBuffer([]byte(config)))
expected := fmt.Sprintf(`invalid config default: option "t" expected %s, got %s`, type_, value)
c.Assert(err, gc.ErrorMatches, expected)
}
assertTypeError("boolean", "henry", `"henry"`)
assertTypeError("string", "2.5", "2.5")
assertTypeError("float", "123", "123")
assertTypeError("int", "true", "true")
}
func (s *ConfigSuite) SetUpSuite(c *gc.C) {
// Just use a single shared config for the whole suite. There's no use case
// for mutating a config, we assume that nobody will do so here.
var err error
s.config, err = charm.ReadConfig(bytes.NewBuffer([]byte(`
options:
title:
default: My Title
description: A descriptive title used for the service.
type: string
subtitle:
default: ""
description: An optional subtitle used for the service.
outlook:
description: No default outlook.
# type defaults to string in python
username:
default: admin001
description: The name of the initial account (given admin permissions).
type: string
skill-level:
description: A number indicating skill.
type: int
agility-ratio:
description: A number from 0 to 1 indicating agility.
type: float
reticulate-splines:
description: Whether to reticulate splines on launch, or not.
type: boolean
`)))
c.Assert(err, gc.IsNil)
}
// When an empty config is supplied an error should be returned
func (s *ConfigSuite) TestEmptyConfigReturnsError(c *gc.C) {
config := ""
result, err := charm.ReadConfig(bytes.NewBuffer([]byte(config)))
c.Assert(result, gc.IsNil)
c.Assert(err, gc.ErrorMatches, "invalid config: empty configuration")
}
func (s *ConfigSuite) TestConfigError(c *gc.C) {
_, err := charm.ReadConfig(bytes.NewBuffer([]byte(`options: {t: {type: foo}}`)))
c.Assert(err, gc.ErrorMatches, `invalid config: option "t" has unknown type "foo"`)
}